|Polling Firm|Month|Link|Favor|Oppose|
|---|---|---|---|---|
|Rutgers-Eagleton|March 2014||64|28|
|Quinnipiac|July 2013||60|31|
|Rutgers-Eagleton|June 2013||59|30|
|Quinnipiac|March 2013||64|30|
|Public Policy Polling|November 2012||53|36|
|Quinnipiac|February 2012||57|37|
|Rutgers-Eagleton|February 2012||54|35|
|Quinnipiac|January 2012||52|42|
|Rutgers-Eagleton|October 2011||52|39|
|Rutgers-Eagleton|August 2011||52|32|
|Public Policy Polling|July 2011||47|42|
|Quinnipiac|November 2009||46|49|
|Rutgers–Eagleton|November 2009||50|42|
|Quinnipiac|April 2009||49|43|
|Zogby International|August 2008||50|42|
|Zogby International|August 2007||48.1|44.6|
|Rasmussen Reports|July 2006||42|54|
|Rutgers-Eagleton|June 2006|PDF|49|44|
|Zogby International|February 2006||56|39|
|Zogby International|April 2005|HTML|54.5|40.1|
|Rutgers-Eagleton|September 2003|PDF|43|50|
|Zogby International|July 2003||55|41|

Question: how many zogby international polls took place in the month of august?
Answer: 2